I connected fine with Safari yesterday, and still do, (just checked), as well as with Chrome (just checked). The survey does not ask for any personal information (other than general demographic stuff, like age-group, etc.), uses a well-known SAP based commercial survey tool, and the email address included in the letter of introduction scans as a valid University email address.

I did the survey. I think it is legitimate. I didn't feel they were being overly intrusive. There was one question I couldn't get the answer to work right, so I just skipped it. I thought a few of the answer choices were not well thought out. But that's their issue not mine.